An adjustable radial artery compression device

Abstract

This invention relates to the field of medical assistive devices, and in particular to an adjustable radial artery compression device. Addressing the problems of inconvenient adjustment and ice pack replacement in existing radial artery compression devices, the invention proposes the following solution: It includes a base and a compression band. The compression band has inserts at both ends, and an ice pack storage slot with a sealing cap is located on the top surface. The base includes a connection mechanism, an adjustment mechanism, and a pressure-increasing mechanism. The connection mechanism comprises a sleeve and a snap-fit ​​assembly, enabling quick assembly and disassembly of the compression band. The adjustment mechanism employs a bidirectional screw, connecting rod, pressure plate, and gear rack linkage structure, driving the sleeve to move synchronously to tighten the compression band. The pressure-increasing mechanism consists of an air bladder and an inflatable cushion, providing synchronous auxiliary pressure to the back of the wrist as the pressure plate moves. This invention allows for quick fixation and precise pressure adjustment, adapting to different wrist sizes, and convenient ice pack replacement. It effectively improves the stability and comfort of radial artery compression hemostasis, solving the problems of cumbersome adjustment and inconvenient ice application in existing devices.

Description

Technical Field

[0001] This invention relates to the field of medical assistive devices, and more particularly to an adjustable radial artery pressurization device. Background Technology

[0002] Radial artery puncture is the most commonly used approach in clinical cardiovascular interventions and invasive blood pressure monitoring. Post-procedure, continuous and stable compression of the puncture site is necessary to prevent complications such as bleeding, subcutaneous hematoma, and pseudoaneurysm. Currently, most radial artery compression hemostasis devices used clinically are simple bandage-type, knob-type, or balloon-type, which still have some shortcomings in practical application.

[0003] On the one hand, most devices use a single-sided knob or segmented Velcro for tightening, which cannot achieve synchronous linkage between frontal wrist compression and back support. This results in low pressure adjustment precision, easily leading to uneven pressure, localized overpressure, or insufficient hemostasis. Furthermore, adjusting the pressure requires untying and re-tying the entire device, making the operation cumbersome. On the other hand, postoperative ice application can reduce pain, swelling, and bleeding, but existing devices typically use externally tied ice packs, which are not securely fixed and easily slip off. Changing the ice pack requires loosening the pressure band, disrupting the established compression pressure, making the operation cumbersome and affecting the continuity of hemostasis. Therefore, this solution proposes an adjustable radial artery pressure device. Summary of the Invention

[0004] The present invention proposes an adjustable radial artery pressurization device, which solves the problems of inconvenient adjustment and inconvenient replacement of ice packs in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An adjustable radial artery pressurization device includes a base and a pressurization belt. Both ends of the pressurization belt are fixed with inserts. The top surface of the pressurization belt has a storage slot for placing ice packs, and a sealing cap is installed on the top of the storage slot. The base is equipped with a plug-in mechanism for fixing the plug, an adjustment mechanism for tightening the pressure belt, and a pressure boosting mechanism for assisting in pressure application. The base has mounting slots on both sides of its top surface. The plug-in mechanism includes two sleeves that are movably disposed in the two mounting slots and two connecting components disposed inside the base. The sleeves are equipped with snap-fit ​​components for snapping into the plug blocks. The adjustment mechanism includes a bidirectional screw rotatably connected to the inner side of the base along its length, two movable blocks threaded onto the bidirectional screw, a pressure plate located inside the base, and a linkage assembly installed inside the base. Both movable blocks are hinged to the pressure plate via connecting rods. The linkage assembly is drivenly connected to the connecting assembly so that when the pressure plate moves, it drives the insert to move in the opposite direction. The pressurizing mechanism works in conjunction with the pressure plate to increase or decrease pressure on the back of the wrist during the movement of the pressure plate.

[0006] The above solution uses a bidirectional screw to drive the moving block and the pressure plate in conjunction with the linkage component and the connecting component to drive the insert to retract synchronously, thereby achieving synchronous and precise adjustment of the pressure belt tightening and the pressure on the back of the wrist. At the same time, the pressure belt is equipped with a storage slot and a sealing cap at the top, so that the ice pack can be placed and replaced without disassembling the pressure belt, ensuring the continuity of pressure hemostasis.

[0007] As a further improvement to the above solution, the outer wall of the insert sleeve is provided with an adjustment hole for installing the snap-fit ​​assembly. The snap-fit ​​assembly includes a snap block disposed in the adjustment hole, a buckle plate fixed at one end of the snap block, and a first spring sleeved on the outer periphery of the snap block. The other end of the snap block is a right-angled trapezoidal structure with an upward inclined surface and extends to the inner side of the insert sleeve. The outer wall of the insert block is provided with a snap hole for snapping the snap block.

[0008] The above solution uses a right-angled trapezoidal structure and a first spring to work together so that when the insert is inserted into the sleeve, it can automatically squeeze the insert to retract and finally lock into the slot, thus achieving quick insertion and fixing of the pressure band. The design of the buckle plate makes it easy to unlock quickly when disassembling.

[0009] As a further improvement to the above solution, the bottom two sides of the insert block are chamfered.

[0010] As a further improvement to the above solution, the connecting assembly includes a mounting plate, a fixing sleeve, and a driven rack. The mounting plate is movably connected to the inner wall of the base through a plurality of first fixing posts. The fixing sleeve is movably sleeved on the outside of the mounting plate and fixed to the bottom of the insert. The driven rack is fixed at one end of the mounting plate near the center of the base.

[0011] The above solution uses a fixed sleeve that is movably fitted onto the mounting plate, allowing the sleeve to tighten as it moves longitudinally with the mounting plate, while also sliding laterally on the mounting plate to accommodate different wrist sizes, thus improving the adaptability of the device.

[0012] As a further improvement to the above solution, the bidirectional screw is rotatably connected to the bottom inner wall of the base, the two moving blocks are respectively threaded to the two reverse thread sections of the bidirectional screw, the pressure plate is movably connected to the bottom inner wall of the base through multiple second fixed columns, and both ends of the pressure plate are fixed with active racks, and the two active racks are respectively set to correspond to the two driven racks. The linkage assembly is provided in two sets, and the two sets of linkage assemblies correspond to two driven racks respectively. The linkage assembly includes a fixed shaft rotatably connected inside it along the width direction of the base and a transmission gear sleeved outside the fixed shaft. The transmission gear meshes with the corresponding driving rack and driven rack.

[0013] The above solution uses a bidirectional screw to drive two moving blocks to move in opposite directions. The connecting rod pushes the pressure plate to rise, and the active rack on the pressure plate moves upward accordingly. Through the transmission gear, it drives the driven rack and the mounting plate to move downward, thereby moving the insert sleeve towards the center of the base to tighten the pressure belt. This achieves a precision mechanical transmission with reverse linkage between the pressure plate and the insert sleeve, ensuring the synchronicity and stability of pressure regulation.

[0014] As a further improvement to the above solution, the base has storage holes on both outer walls that are coaxially arranged with the bidirectional screw. An adjusting head is movably sleeved on the end of the bidirectional screw. A limit groove is formed on the inner ring of the adjusting head. A limit block that slides with the limit groove is fixed on the end of the bidirectional screw. A resistance ring for limiting the rotation of the adjusting head is fixed on the inner wall of the storage hole.

[0015] The above solution uses the sliding engagement between the adjusting head and the limiting block to allow the adjusting head to be pulled out for rotational adjustment and then pushed into the storage hole for locking. The resistance ring uses static friction to limit the rotation of the adjusting head, effectively preventing the unexpected rotation of the bidirectional screw after adjustment and ensuring the stable maintenance of the compression pressure.

[0016] As a further improvement to the above solution, the pressurization mechanism includes an airbag installed between the inner wall of the top of the base and the pressure plate, and an inflatable cushion installed on the top of the base, with the inflatable cushion and the airbag connected by a pipe.

[0017] As a further improvement to the above solution, a plurality of return springs are fixedly connected between the sleeve and the side of the mounting groove away from the center of the base, and the outer walls of the two sides of the sleeve slide against the outer walls of the two long sides of the mounting groove respectively.

[0018] As a further improvement to the above solution, a positioning component is provided between the insert and the mounting plate, and a recessed hole for installing the positioning component is provided on the bottom inner side of the insert. The positioning component includes a positioning post, a spring clip sleeved around the outer periphery of the positioning post, and a mounting plate installed between the spring clip and the bottom of the recessed hole. The top surface of the mounting plate has multiple positioning holes evenly distributed along its length. The positioning post cooperates with the positioning holes to lock the sleeve when the positioning post is inserted into the positioning hole.

[0019] The above solution involves pressing the positioning post downwards when the insert is inserted into the sleeve, causing the bottom end of the positioning post to engage with the corresponding positioning hole on the mounting plate. This locks the relative position of the sleeve and the mounting plate, preventing accidental displacement of the sleeve during use and ensuring absolute stability of the pressure and position of the compression band on the radial artery.

[0020] As a further improvement to the above solution, the sealing cap is detachably connected to the top surface of the pressure band via Velcro.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Convenient adjustment and strong adaptability: Through the linkage of bidirectional screw, transmission gear and rack, the sleeve can move synchronously and the pressure belt can be tightened, which can be adapted to wrists of different thicknesses. The adjustment accuracy is high and the operation is simple.

[0022] 2. Easy to install and disassemble: The plug and sleeve adopt a flexible snap-fit ​​structure, which automatically locks after insertion. It can be quickly disassembled by pressing the buckle, which improves the efficiency of use.

[0023] 3. Easy to replace ice packs: The compression band has a storage slot and a Velcro sealing cap, which can be quickly removed and replaced with ice packs to continuously apply ice to stop bleeding, reduce swelling and pain, without having to remove the compression band, thus maintaining continuous pressure.

[0024] 4. The pressure plate moves and simultaneously squeezes the airbag, causing the air cushion to expand and assist in pressurization. The wrist is subjected to uniform force, resulting in stable hemostasis. In addition, the positioning component automatically locks the insert after the insert block is inserted, preventing displacement during use and improving the stability and safety of the device. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a sectional view of the base; Figure 3 This is a front sectional view of the base; Figure 4 A structural diagram of the insert, sleeve, and mounting plate; Figure 5 This is a schematic diagram of the pressure belt structure; Figure 6 This is a structural diagram of the adjusting head, the limiting block, and the limiting groove.

[0026] Explanation of key symbols: 1. Base; 2. Pressure band; 3. Sealing cover; 4. Mounting groove; 5. Return spring; 6. Adjusting head; 7. Insert sleeve; 8. Insert block; 9. Inflatable cushion; 10. Buckle plate; 11. First fixing post; 12. Mounting plate; 13. Fixing sleeve; 14. Resistance ring; 15. Bidirectional screw; 16. Driven rack; 17. Driving rack; 18. Moving block; 19. Connecting rod; 20. Transmission gear; 21. Fixed shaft; 22. Airbag; 23. Pressure plate; 24. Storage hole; 25. Second fixing post; 26. Locking hole; 27. Locking block; 28. Adjusting hole; 29. ​​Positioning hole; 30. Positioning post; 31. Recessed hole; 32. Storage groove; 33. Limiting block; 34. Limiting groove. Detailed Implementation

[0027] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] Example 1:

[0029] like Figure 1 and Figure 2 As shown, this embodiment provides an adjustable radial artery compression device, including a base 1 and a compression band 2. Both ends of the compression band 2 are fixed with inserts 8, and the top surface of the compression band 2 has a storage slot 32 for holding an ice pack. A sealing cap 3 is installed on the top of the storage slot 32. Specifically, the base 1 is typically placed on the back of the patient's wrist, while the compression band 2 crosses the front of the wrist and covers the radial artery puncture point. The inserts 8 serve as a connection structure between the compression band 2 and the base 1, facilitating the assembly and disassembly of the compression band 2 and the base 1. The storage slot 32 and the sealing cap 3 allow the ice pack to be stably contained inside the compression band 2, directly applying cold compresses to the puncture point, and the sealing cap 3 prevents the ice pack from slipping or condensation from overflowing. It should be understood that although the sealing cap 3 is described as a top-mounted cap in this embodiment, in other embodiments, the sealing cap 3 can also be a flip-top cap, a pull-out cap, or a flexible wrapping layer, as long as it can seal the storage slot 32 and allow the ice pack to be replaced.

[0030] Furthermore, the base 1 is equipped with a plug-in mechanism for fixing the plug 8, an adjustment mechanism for tightening the pressure band 2, and a pressure-boosting mechanism for assisting in pressure application. Furthermore, mounting slots 4 are provided on both sides of the top surface of the base 1. The plug-in mechanism includes two sleeves 7 movably disposed within the two mounting slots 4 and two connecting components disposed inside the base 1. The sleeves 7 are equipped with locking components for engaging the plug 8. Specifically, the mounting slots 4 provide sliding track space for the sleeves 7, allowing the sleeves 7 to be adjusted in position according to wrist width or tightening requirements. As the direct receiver of the plug 8, the sleeves 7 achieve quick locking and unlocking with the plug 8 through their locking components.

[0031] The adjustment mechanism includes a bidirectional screw 15 rotatably connected to the inner side of the base 1 along its length, two movable blocks 18 threaded onto the bidirectional screw 15, a pressure plate 23 located within the base 1, and a linkage assembly installed within the base 1. Both movable blocks 18 are hinged to the pressure plate 23 via a connecting rod 19. The linkage assembly is driven by the connecting assembly, so that when the pressure plate 23 moves, it drives the insert 7 to move in the opposite direction. Specifically, the bidirectional screw 15 serves as a rotary input end. When it is driven to rotate forward or reverse by an external driving force (such as a knob, crank, etc.), the two threads on it with opposite directions force the two movable blocks 18 to move closer or further apart. The linear motion of the movable blocks 18 is converted into the lifting and lowering motion of the pressure plate 23 via the connecting rod 19. Furthermore, while the pressure plate 23 is lifting and lowering, it transmits power to the connecting assembly via the linkage assembly, thereby driving the insert 7 to slide in the mounting groove 4 in the opposite direction to the movement of the pressure plate 23. For example, when the pressure plate 23 moves upward, the sleeve 7 retracts inward toward the center of the base 1, thereby tightening the pressure band 2; when the pressure plate 23 moves downward, the sleeve 7 opens outward, and the pressure band 2 relaxes.

[0032] The pressure-increasing mechanism works in conjunction with the pressure plate 23 to apply pressure or decompression to the back of the wrist during the movement of the pressure plate 23. Specifically, the pressure-increasing mechanism utilizes the mechanical displacement or squeezing force generated when the pressure plate 23 rises and falls, converting it into fluid pressure or elastic expansion force acting on the back of the wrist. When the adjusting mechanism drives the pressure plate 23 to rise to tighten the pressure band 2, the pressure-increasing mechanism simultaneously applies a reverse support force to the back of the wrist, forming a two-way clamping state with pressure from the front pressure band and support from the back pressure-increasing mechanism, thereby effectively avoiding local pressure sores or insufficient hemostasis caused by unilateral force.

[0033] With the above structural design, the tightening of the pressure belt and the preparation of pressure on the back of the wrist can be completed simultaneously with just one rotary input action. Furthermore, the replacement of the ice pack is independent of the pressure belt structure, which solves the technical defects of existing devices such as cumbersome adjustment, uneven force distribution, and interruption of ice application.

[0034] Example 2:

[0035] like Figure 4 and Figure 5As shown, this embodiment is further improved on the basis of embodiment 1 in that: the outer wall of the insert 7 is provided with an adjustment hole 28 for installing the snap-fit ​​assembly. The snap-fit ​​assembly includes a snap block 27 disposed in the adjustment hole 28, a buckle plate 10 fixed to one end of the snap block 27, and a first spring sleeved on the outer periphery of the snap block 27. The other end of the snap block 27 is a right-angled trapezoidal structure with an upward bevel and extends to the inner side of the insert 7. The outer wall of the insert 8 is provided with a snap hole 26 for snapping the snap block 27. Specifically, the adjustment hole 28 not only provides space for the snap block 27 and the first spring to be installed and extended, but also reserves a gap between its bottom and the buckle plate 10 for the insertion of a finger. This allows medical personnel to easily insert their fingers and snap the buckle plate 10 outward when disassembling the pressure band 2, thereby driving the snap block 27 out of the snap hole 26, achieving quick unlocking. Furthermore, the end of the locking block 27 that extends into the inner side of the sleeve 7 adopts a right-angled trapezoidal structure with an upward-sloping face. When the locking block 8 is inserted downward into the sleeve 7, the side wall of the locking block 8 will first contact the upper slope of the right-angled trapezoid. As the locking block 8 continues to press down, the slope is subjected to a horizontal force, which automatically pushes the locking block 27 outward towards the adjustment hole 28, and the first spring is compressed and stored. When the locking block 8 is fully inserted to the bottom, so that the locking hole 26 and the locking block 27 are aligned, the horizontal force disappears, and the first spring releases its stored force to spring the locking block 27 into the locking hole 26 to complete the locking. Through the linkage of the slope compression and the spring reset, the automatic locking process after insertion is realized, eliminating the need for medical staff to press the buckle, greatly improving the efficiency of wearing in clinical emergency situations.

[0036] Furthermore, both sides of the bottom of the insert 8 are chamfered. Specifically, the chamfers provide crucial guidance for the initial insertion of the insert 8 into the sleeve 7. Without the chamfers and with a flat end design, the insert 8 is prone to hard interference or jamming with the beveled surface of the locking block 27 when entering the sleeve 7, resulting in a stiff insertion or even an inability to press down. The chamfers on both sides of the bottom form a smooth transition surface, allowing the insert 8 to slide smoothly into the sleeve 7 and smoothly engage with the beveled surface of the locking block 27, avoiding any initial resistance during insertion.

[0037] Furthermore, multiple return springs 5 ​​are fixedly connected between the insert 7 and the side of the mounting groove 4 away from the center of the base 1. The outer walls of both sides of the insert 7 slide against the outer walls of the long sides of the mounting groove 4. Specifically, the return springs 5 ​​always apply a pre-tightening force to the insert 7, causing it to open outwards from the base 1. In the unworn state, the two inserts 7 naturally open to their maximum distance under the action of the return springs 5. When the base 1 is placed on the back of the patient's wrist, the inserts 7 will naturally fit and clamp onto both sides of the wrist under the pushing force of the return springs 5, forming initial positioning and wrapping. The above structure allows the device to be stably pre-installed on wrists of different sizes before the insert 8 is inserted and locked, preventing the base from slipping or shifting position, and providing a stable operating reference for the subsequent insertion of the insert 8. At the same time, the sliding contact between the outer walls of both sides of the insert 7 and the outer walls of the long sides of the mounting groove 4 ensures the trajectory stability of the insert 7 during movement, preventing it from deflecting or tilting.

[0038] For the need for ice packs after radial artery puncture, the top surface of the pressure band 2 has a storage slot 32 for placing ice packs, and a sealing cap 3 is installed on the top of the storage slot 32. In this embodiment, the sealing cap 3 is detachably connected to the top surface of the pressure band 2 via Velcro. Specifically, the hook side and the loop side of the Velcro are respectively located at the edge of the sealing cap 3 and the periphery of the storage slot 32, and the storage slot 32 can be opened or closed with a simple tearing action. The above structure is designed to ensure the continuity of hemostasis: after the operation, ice packs usually need to be changed regularly to maintain the cold compress effect. If the ice pack is fixed by the traditional binding method, the pressure band 2 must be loosened when changing it, which may destroy the established pressure and easily cause bleeding or hematoma at the puncture site; however, in this embodiment, through the combination of the storage slot 32 and the Velcro sealing cap 3, medical staff only need to lift the sealing cap 3 to directly remove the old ice pack and put in the new ice pack, without touching or removing the pressure band 2 throughout the process, thus achieving the clinical requirement of uninterrupted pressure during replacement. It should be understood that although Velcro is preferred as a detachable connection method in this embodiment, in other embodiments, the sealing cover 3 and the pressure band 2 can also be connected by any equivalent alternative means that can achieve quick opening and closing without having to unfasten the pressure band 2, such as snaps, hooks, or flip hinges.

[0039] Example 3:

[0040] This embodiment is further optimized based on the basic architecture of Embodiments 1 and 2, as follows: Figure 2 , Figure 3 and Figure 6As shown, the connecting assembly includes a mounting plate 12, a fixing sleeve 13, and a driven rack 16. The mounting plate 12 is movably connected to the inner wall of the base 1 via multiple first fixing posts 11. The fixing sleeve 13 is movably fitted onto the outside of the mounting plate 12 and fixed to the bottom of the insert 7. The driven rack 16 is fixed to one end of the mounting plate 12 near the center of the base 1. Specifically, the first fixing posts 11 are vertically fixed to the top inner wall of the base 1, and the mounting plate 12 is movably fitted onto the first fixing posts 11 through sliding holes, allowing the mounting plate 12 to slide stably up and down in the vertical direction inside the base 1. The fixing sleeve 13 is fixedly connected to the bottom of the insert 7 and is movably fitted onto the outside of the horizontally arranged mounting plate 12. This fitted relationship allows the insert 7 to move up and down with the mounting plate 12 while also sliding freely in the horizontal direction on the mounting plate 12. This allows the insert 7 to respond to the tightening driving force of the adjustment mechanism and to adaptively adjust the lateral spacing according to the actual thickness of the patient's wrist, greatly improving the adaptability and wearing comfort of the device.

[0041] Furthermore, the bidirectional screw 15 is rotatably connected to the bottom inner wall of the base 1, and the two moving blocks 18 are respectively threaded to the two reverse threaded sections of the bidirectional screw 15. The pressure plate 23 is movably connected to the bottom inner wall of the base 1 through multiple second fixed posts 25. Both ends of the pressure plate 23 are fixed with active racks 17, and the two active racks 17 are respectively set with two driven racks 16. There are two sets of linkage components, and the two sets of linkage components are respectively set with two driven racks 16. The linkage components include a fixed shaft 21 rotatably connected inside the base 1 along the width direction and a transmission gear 20 sleeved outside the fixed shaft 21. The transmission gear 20 meshes with the corresponding active racks 17 and driven racks 16. Specifically, when medical staff rotate the bidirectional screw 15 in the forward direction, the two moving blocks 18 will approach each other along the length of the base 1 because the two threads rotate in opposite directions. The approach of the moving blocks 18 pushes the pressure plate 23 to overcome the guiding restriction of the second fixed column 25 and rise towards the inner wall of the top of the base 1 through the hinged connecting rod 19. The rise of the pressure plate 23 drives the active racks 17 at both ends to move upward synchronously. The upward movement of the active racks 17 drives the transmission gear 20 meshing with it to reverse around the fixed shaft 21. The reverse movement of the transmission gear 20 then drives the driven rack 16 meshing with it to move downward. The downward movement of the driven rack 16 drives the mounting plate 12 to descend along the first fixed column 11, thereby pulling the insert 7 inward towards the center of the base 1 through the fixed sleeve 13. Through the cooperation of the above structure, the rotational input of the single axis is converted into a bidirectional synchronous action of front pressure belt tightening and back pressure enhancement mechanism preparation, realizing the linkage between front pressure and back support, avoiding the problem of local pressure sores or insufficient hemostasis caused by unilateral force. Conversely, when the bidirectional screw 15 is rotated in the opposite direction, the above-mentioned transmission link operates in reverse, the pressure plate 23 descends, and the sleeve 7 expands and relaxes.

[0042] To achieve precise pressure adjustment and prevent pressure retraction due to accidental touch or wrist movement after adjustment, the base 1 has storage holes 24 on both outer walls, coaxially aligned with the bidirectional screw 15. An adjusting head 6 is movably fitted onto the end of the bidirectional screw 15. A limiting groove 34 is formed in the inner ring of the adjusting head 6. A limiting block 33, which slides into the limiting groove 34, is fixed to the end of the bidirectional screw 15. A resistance ring 14, used to restrict the rotation of the adjusting head 6, is fixed to the inner wall of the storage hole 24. Specifically, the adjusting head 6 is connected to the end of the bidirectional screw 15 through the sliding engagement of the limiting block 33 and the limiting groove 34, allowing the adjusting head 6 to be pulled out or pushed in along the axial direction of the bidirectional screw 15. When pulled out, medical personnel can easily rotate the adjusting head 6 to drive the bidirectional screw 15 for pressure adjustment; when pushed in, the adjusting head 6 is stored in the storage hole 24. In addition, the resistance ring 14 fixed to the inner wall of the receiving hole 24 is made of a high friction coefficient material such as rubber. When the adjustment head 6 is pushed into the receiving hole 24 after adjustment, the outer ring of the adjustment head 6 and the inner ring of the resistance ring 14 are tightly abutted, and a large static friction force is generated between them, thereby locking the adjustment head 6 firmly and preventing any accidental rotation, ensuring that the position of the bidirectional screw 15 is absolutely fixed, and thus ensuring the stable maintenance of the compression pressure.

[0043] The pressurization mechanism includes an airbag 22 installed between the inner wall of the top of the base 1 and the pressure plate 23, and an inflatable cushion 9 installed on the top of the base 1. The inflatable cushion 9 and the airbag 22 are connected by a pipe. Specifically, when the adjusting mechanism drives the pressure plate 23 to rise to tighten the pressure band 2, the pressure plate 23 simultaneously squeezes the airbag 22 upward. After the airbag 22 is compressed, the air inside it is forced into the inflatable cushion 9 through the pipe, causing the inflatable cushion 9 to expand outward in the storage groove at the top of the base 1. The expanded inflatable cushion 9 directly adheres to the back of the patient's wrist, forming a bidirectional clamping state with the pressure band 2 tightened on the front. In addition, the flexible material of the airbag and the inflatable cushion allows the back support force to be distributed extremely evenly over a wide area of ​​the back of the wrist, avoiding local pressure pain or nerve compression caused by a rigid top plate, significantly improving the patient's comfort and hemostatic stability during long-term wear. When the pressure plate 23 descends and relaxes, the airbag 22 returns to its original shape, the air in the inflatable cushion 9 flows back, and the support force also dissipates simultaneously.

[0044] Example 4:

[0045] like Figure 4 As shown, this embodiment is further improved on the basis of embodiments 1-3 in that: a positioning component is provided between the insert 7 and the mounting plate 12, and a recessed hole 31 for installing the positioning component is provided on the bottom inner side of the insert 7. The setting of the recessed hole 31 provides a stable installation space for the positioning component, so that the movement of the positioning component will not be affected by the external environment or wrist shaking.

[0046] The positioning assembly includes a positioning post 30, a spring clip sleeved around the periphery of the positioning post 30, and a buffer spring installed between the spring clip and the bottom of the recess 31. The top surface of the mounting plate 12 has multiple positioning holes 29 evenly distributed along its length. The positioning post 30 engages with the positioning holes 29 to lock the insert 7 when the positioning post 30 is inserted into the positioning hole 29. Under normal conditions, the buffer spring applies an upward preload to the spring clip, causing the top of the positioning post 30 to retract inside the insert 7, while its bottom remains suspended and does not extend into any of the positioning holes 29 of the mounting plate 12. At this time, the insert 7 and the mounting plate 12 are in a completely free sliding engagement state, allowing the insert 7 to slide freely along the mounting plate 12 to accommodate different patients' wrist circumference sizes. When the inserts 8 at both ends of the pressure band 2 are inserted into the sleeve 7 and reach the bottom, the bottom surface of the insert 8 will directly press down on the top of the positioning post 30, forcing the positioning post 30 to move downward against the elastic force of the buffer spring. Its bottom end passes through the connecting hole at the bottom of the recess 31 and engages with a positioning hole 29 on the top surface of the mounting plate 12 that is directly opposite it. At this time, the engagement of the positioning post 30 and the positioning hole 29 locks the relative position of the sleeve 7 and the mounting plate 12, and the sleeve 7 can no longer slide along the length of the mounting plate 12.

[0047] During the process of the adjustment mechanism driving the insert 7 to tighten the pressure band 2 through gear and rack linkage, the insert 7 needs to withstand a large lateral tensile force and friction. If the insert 7 and the mounting plate 12 rely only on sliding fit without rigid locking, slight wrist tremors or slight retraction of the adjustment mechanism can easily cause the insert 7 to slide and shift on the mounting plate 12, thereby causing the pressure of the pressure band 2 on the radial artery puncture point to decrease or even completely shift, resulting in a serious risk of hemostasis failure. In this embodiment, the positioning component locks the insert 7 and the mounting plate 12 after the insert block 8 is inserted, avoiding relative sliding between the two. When the treatment is over and the pressure band 2 needs to be removed, simply pull the insert block 8 upwards. The squeezing force at the top of the positioning post 30 disappears instantly, the buffer spring immediately releases its stored force to push the positioning post 30 back to its original position, and the bottom end exits from the positioning hole 29. The insert 7 is unlocked and returns to a sliding state.

[0048] In addition, the number and spacing of the positioning holes 29 evenly distributed along the length of the mounting plate 12 can be adapted to the adjustment range of common wrist circumference sizes in clinical practice.

[0049] Example 5:

[0050] To more clearly demonstrate the dynamic operation effect and clinical value of the technical solution of the present invention in a real medical environment, this embodiment, based on embodiments 1-4, takes the radial artery puncture hemostasis scenario of a patient after cardiovascular intervention as an example to describe the complete usage process of the present invention in detail.

[0051] In this clinical application scenario, medical staff and patients perform the following procedures: In step S1, the medical staff places the base 1 on the back of the patient's wrist. At this time, the sleeve 7 naturally opens under the action of the return spring 5 and fits snugly against both sides of the wrist. This allows the device to be stably pre-installed on wrists of different sizes by relying on the pre-tension force of the spring before it is fully locked, preventing the base from slipping and providing a stable reference for subsequent operations.

[0052] In step S2, the medical staff places the pressure band 2 across the front of the wrist, accurately covering the radial artery puncture site. Then, the inserts 8 fixed at both ends of the pressure band 2 are aligned and inserted into the sleeves 7 on both sides of the base 1. During insertion, the chamfered edges on both sides of the bottom of the insert 8 provide extremely smooth guidance, allowing the insert 8 to slide smoothly into the inside of the sleeve 7. As the insert 8 continues to be pressed down, its sidewall contacts the upward-facing right-angled trapezoidal structure of the locking block 27, automatically pushing the locking block 27 outwards towards the adjustment hole 28 until the insert 8 is fully inserted to the bottom. Under the action of the first spring, the locking block 27 instantly springs into the locking hole 26 on the outer wall of the insert 8, completing the quick locking and fixing upon insertion. More importantly, as the insert 8 is fully inserted, the bottom surface of the insert 8 presses down on the positioning post 30, forcing the positioning post 30 to overcome the elastic force of the buffer spring and move downward. Its bottom end passes through the concave hole 31 and is inserted into a positioning hole 29 on the top surface of the mounting plate 12, thereby locking the sleeve 7 and the mounting plate 12 after the insert 8 is inserted, thus locking the position of the sleeve 7 and effectively preventing the sleeve 7 from accidentally shifting during the subsequent tightening process.

[0053] In step S3, after locking, the medical staff pulls out the adjusting head 6 from the storage hole 24 and rotates it clockwise, driving the bidirectional screw 15 to rotate. The clockwise rotation of the bidirectional screw 15 forces the two moving blocks 18 to move closer together. The moving blocks 18 push the pressure plate 23 upward toward the inner wall of the top of the base 1 via the connecting rod 19. The rise of the pressure plate 23 causes the active racks 17 at both ends to move upward synchronously. The active racks 17 drive the driven rack 16 downward through the transmission gear 20, thereby causing the mounting plate 12 and the insert 7 to retract inward toward the center of the base 1, thus evenly tightening the pressure band 2 at the radial artery of the wrist. At the same time, the rising of the pressure plate 23 synchronously squeezes the air bladder 22 between the inner wall of the top of the base 1 and the pressure plate 23. After the air bladder 22 is compressed, the air inside it is forced into the inflatable pad 9 installed on the top of the base 1 through the pipe, so that the inflatable pad 9 expands and protrudes and fits against the back of the patient's wrist, forming a two-way clamping posture with the pressure band 2 tightened on the front, thereby achieving synchronous pressure increase of frontal compression and back support.

[0054] In step S4, once the tightening pressure of the pressure band 2 and the back support force of the air cushion 9 reach the clinically required compression standard, the medical staff stops rotating the adjustment head 6 and pushes it into the storage hole 24. At this time, the outer ring of the adjustment head 6 is in close contact with the resistance ring 14 fixed to the inner wall of the storage hole 24. The large static friction force generated between the two locks the adjustment head 6 firmly, preventing any accidental rotation of the bidirectional screw 15 and ensuring the absolute stability of the compression pressure during long-term wear.

[0055] Step S5, 2 hours post-surgery, requires changing the ice pack to maintain the cooling effect according to clinical ice pack guidelines. Medical staff simply lift the sealing cap 3, which is detachably connected to the top of the pressure band 2 via Velcro, remove the melted old ice pack from the storage compartment 32, and place a new ice pack inside. Then, the sealing cap 3 is resealed. Throughout the entire ice pack replacement process, medical staff do not need to touch or loosen the pressure band 2 or the adjustment head 6. The established frontal compression and back support pressure remain intact, avoiding the risks of bleeding or hematoma at the puncture site caused by loosening the straps required for ice pack replacement with traditional devices.

[0056] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. An adjustable radial artery pressurization device, comprising a base (1) and a pressurization band (2), characterized in that, Both ends of the pressure belt (2) are fixed with inserts (8), and the top surface of the pressure belt (2) is provided with a storage slot (32) for placing ice packs. A sealing cap (3) is installed on the top of the storage slot (32). The base (1) is equipped with a plug-in mechanism for fixing the plug (8), an adjustment mechanism for tightening the pressure belt (2), and a pressure boosting mechanism for assisting pressure. The base (1) has mounting slots (4) on both sides of its top surface. The plug-in mechanism includes two plug sleeves (7) that are movably disposed in the two mounting slots (4) and two connecting components disposed inside the base (1). The plug sleeves (7) are equipped with snap-fit ​​components for snapping into the plug block (8). The adjustment mechanism includes a bidirectional screw (15) rotatably connected to the inner side of the base (1) along its length, two moving blocks (18) threaded onto the bidirectional screw (15), a pressure plate (23) located in the base 1, and a linkage assembly installed in the base (1). The two moving blocks (18) are hinged to the pressure plate (23) via a connecting rod (19). The linkage assembly is connected to the connecting assembly in a transmission manner so that when the pressure plate (23) moves, it drives the insert (7) to move in the opposite direction. The pressurizing mechanism works in conjunction with the pressure plate (23) to increase or decrease pressure on the back of the wrist during the movement of the pressure plate (23).

2. The adjustable radial artery pressurization device according to claim 1, characterized in that, The outer wall of the insert (7) is provided with an adjustment hole (28) for installing the snap-fit ​​assembly. The snap-fit ​​assembly includes a snap block (27) disposed in the adjustment hole (28), a buckle plate (10) fixed at one end of the snap block (27), and a first spring sleeved on the outer periphery of the snap block (27). The other end of the snap block (27) is a right trapezoidal structure with an upward inclined surface and extends to the inner side of the insert 7. The outer wall of the insert (8) is provided with a snap hole (26) for snapping the snap block (27).

3. The adjustable radial artery pressurization device according to claim 1, characterized in that, Both sides of the bottom of the insert (8) are chamfered.

4. The adjustable radial artery pressurization device according to claim 1, characterized in that, The connecting assembly includes a mounting plate (12), a fixing sleeve (13), and a driven rack (16). The mounting plate (12) is movably connected to the inner wall of the base (1) through a plurality of first fixing posts (11). The fixing sleeve (13) is movably sleeved on the outside of the mounting plate (12) and fixed to the bottom of the insert (7). The driven rack (16) is fixed at one end of the mounting plate (12) near the center of the base (1).

5. The adjustable radial artery pressurization device according to claim 4, characterized in that, The bidirectional screw (15) is rotatably connected to the bottom inner wall of the base (1), and the two moving blocks (18) are respectively threaded to the two reverse thread sections of the bidirectional screw (15). The pressure plate (23) is movably connected to the bottom inner wall of the base (1) through multiple second fixed columns (25). Both ends of the pressure plate (23) are fixed with active racks (17), and the two active racks (17) are respectively set to correspond with the two driven racks (16). The linkage assembly is provided in two sets, and the two sets of linkage assemblies correspond to two driven racks (16) respectively. The linkage assembly includes a fixed shaft (21) rotatably connected inside the base (1) in the width direction and a transmission gear (20) sleeved outside the fixed shaft (21). The transmission gear (20) meshes with the corresponding active rack (17) and driven rack (16).

6. The adjustable radial artery pressurization device according to claim 5, characterized in that, The base (1) has storage holes (24) on both outer walls that are coaxial with the bidirectional screw (15). An adjusting head (6) is movably sleeved on the end of the bidirectional screw (15). A limiting groove (34) is opened on the inner ring of the adjusting head (6). A limiting block (33) that slides with the limiting groove (34) is fixed on the end of the bidirectional screw (15). A resistance ring (14) for limiting the rotation of the adjusting head (6) is fixed on the inner wall of the storage hole (24).

7. The adjustable radial artery pressurization device according to claim 1, characterized in that, The pressurization mechanism includes an airbag (22) installed between the inner wall of the top of the base (1) and the pressure plate (23) and an inflatable cushion (9) installed on the top of the base (1). The inflatable cushion (9) and the airbag (22) are connected by a pipe.

8. The adjustable radial artery pressurization device according to claim 1, characterized in that, Multiple reset springs (5) are fixedly connected between the sleeve (7) and the side of the mounting groove (4) away from the center of the base (1). The outer walls of the two sides of the sleeve (7) slide against the outer walls of the two long sides of the mounting groove (4).

9. An adjustable radial artery pressurization device according to claim 5, characterized in that, A positioning component is provided between the sleeve (7) and the mounting plate (12), and a recess (31) for installing the positioning component is provided on the bottom inner side of the sleeve (7). The positioning assembly includes a positioning post (30), a spring clip sleeved around the periphery of the positioning post (30), and a mounting plate (12) with multiple positioning holes (29) evenly distributed along its length on the top surface. The positioning post (30) cooperates with the positioning holes (29) to lock the insert (7) when the positioning post (30) is inserted into the positioning hole (29).

10. The radial artery compression device according to claim 1, characterized in that, The sealing cap (3) is detachably connected to the top surface of the pressure band (2) via Velcro.

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